Method hexStringToByteArray

src/com/autoDecoder/util/codeEncode.java:115–123

(String hexString)

    // 将十六进制字符串转换为字节数组
    public static byte[] hexStringToByteArray(String hexString) {
        int len = hexString.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
                    + Character.digit(hexString.charAt(i+1), 16));
        }
        return data;
    }